networking - Wi-Fi problems Acer Aspire e15 E5-575G-53VG Ubuntu 16.04 LTS - Ask Ubuntu

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• no wifi in qualcom atheros - ubuntu 16.04 - acer aspire e 15 1 answer

i've been having wifi problem on qualcomm atheros long time , have looked solutions everywhere, i've tried wicd, updating driver kvalo, etc..

i have though ran lspci -nnk | grep -ia2 net; dmesg | grep ath10k , error:

direct firmware load ath10k/cal-pci-0000:03:00.0.bin failed error -2 

please need help, wireless-info found below

http://pastebin.com/bvxsbgcb

edit: forgot mention dual boot system along windows 10

first, notice this:

group cipher : tkip

not tkip rather insecure, many linux drivers not connect tkip. check settings in router. wpa2-aes preferred; not wpa , wpa2 mixed mode , not tkip. second, if router capable of n speeds, may have better connectivity channel width of 20 mhz in 2.4 ghz band instead of automatic 20/40 mhz, although affect n speeds. have better luck fixed channel, either 1, 6 or 11, rather automatic channel selection. also, router not set use n speeds only; auto b, g , n preferred. after making these changes, reboot router.

next, recommend regulatory domain set explicitly. check yours:

sudo iw reg 

if 00, one-size-maybe-fits-all setting. find yours here: http://en.wikipedia.org/wiki/iso_3166-1_alpha-2 set temporarily:

sudo iw reg set 

of course, substitute country code if not iceland. set permanently:

gksudo gedit /etc/default/crda 

use nano or kate or leafpad if don't have text editor gedit.

change last line read:

regdomain=is 

proofread carefully, save , close text editor.

next, see device attempting roam between 2 networks same name, "ea2700". suspect 2.4 ghz , 5 ghz bands of router. suggest rename one, or both, ea2700-2.4 , ea2700-5. ask device connect 1 , stay. @ least in neighborhood, 5 ghz rare, i'd make first choice.

we notice have both network manager , wicd installed , running. suggest remove wicd is, you've seen, doing no better job nm:

 sudo apt-get purge wicd